Thermal Energy

What is a characteristic of a solid substance?

• It has no definite shape.

• It has no definite volume.

• Its particles are packed tightly together and vibrate in place.

• Its particles can move around one another.

How does the shape of a liquid compare to that of a solid?

• A liquid has a definite shape like a solid.

• A liquid has no definite shape, but has a definite volume.

• A liquid's shape and volume can change.

• A liquid's particles are not as tightly packed as in a solid.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

Which statement is true about gases?

• Gases have a definite shape and a definite volume.

• Gases have a definite shape but no definite volume.

• Gases have no definite shape and their particles are spread far apart.

• Gases have tightly packed particles that vibrate in place.

Tags

NGSS.MS-PS1-4

What happens to the particles in a gas compared to those in a solid?

• They are packed more tightly together.

• They vibrate in place without moving around.

• They are spread very far apart, filling all the space available to them.

• They can move around one another but cannot change the space they take up.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is thermal energy?

• The decrease in the size of an object when cooled

• The energy contained within a system that is responsible for its temperature

• The increase in the size of an object when heated

• The flow of thermal energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What happens to particles when they are heated?

• They move slower and have less kinetic energy

• They contract and bump into each other less often

• They move faster and have more kinetic energy

• They do not change their behavior

Tags

NGSS.MS-PS1-4

What is the process called when an object increases in size due to heating?

• Contraction

• Freezing

• Expansion

• Evaporation

Tags

NGSS.MS-PS1-4

What is the process called when an object decreases in size due to cooling?

• Expansion

• Evaporation

• Contraction

• Condensation

What is heat in terms of thermal energy?

• A measure of how cold a system is

• The size change of an object when heated or cooled

• The flow of thermal energy

• The kinetic energy of particles in a solid

Tags

NGSS.MS-PS3-3

What is sublimation?

• A substance changes from a gas to a liquid.

• A substance changes from a liquid to a solid.

• A substance changes from a solid straight to a gas (skipping liquid).

• A substance changes from a gas straight to a solid.

Tags

NGSS.MS-PS1-4